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The Differences between LCD and Plasma TVs

The Differences between LCD and Plasma TVs

We all wonder how it is these televisions actually function? The letters LCD is “liquid crystal display,” with crystals shaped like spirals are in between being liquid and solid, they can be rolled and unrolled with the application of electricity. On the display the electricity is implemented to block and unblock colored peices of glass, each one a different color, a blue, red, and green filter. Then you see the image as light shines through this LCD, and it filters the colors.

Plasma screens use fluorescent lights like what you would find in office lighting, but on a much smaller scale. When electricity is passed through the light, it excites the gas inside which reacts with a phosphor coating inside the bulb, creating light. Like LCDs, pixels are made of a red, green, and blue light, but this comes directly from the bulbs.

What are the advantages and disadvantages of these technologies? Since LCD TVs are passing light through the screen, the screen limits light penetration at far angles, making the screen look less dynamic when viewed from the sides. LCD TVs are brighter than Plasma sets, making them a better choice in bright rooms. Also, the surface of a plasma television’s screen will reflect light, making it difficult to see in bright rooms. However, plasma screens experience less bleeding of color in low light situations, and since light levels are controlled directly, plasma displays are capable of much deeper blacks. Plasma uses two to three times more power than an equivalent LCD set. This is particularly true of LED-backlit LCD TVs, as most of the energy used in an LCD television is to power the backlight.

Technological improvements? There are numerous and constant advancements happening in this field, both of these technologies are better and are becoming similar in their performance, taking care of past problems with earlier sets. An example, LCDs used to have some blur in their motion because the crystals could not go off and on quickly enough, now the sets run 120-240hz (times per second) switching so quickly that this issue is no longer around. The processes of building these electronic wonders has gotten so much better that the LCD pricing is getting much closer to the plasma costs.

An improvement from the past on the plasma means there is little chance of experiencing burn in, this is where the screen will develop a darker area if it’s left on the same screen for a long period of time. If you use the same channel constantly or the set is used for video games is usually when this happened. They’ve created new screen coatings which make it good for much longer before the burn in becomes an issue, and there are screen savers which also help.

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May 20, 2010 - Posted by | Computers & Technology | , , , ,

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